Mercedes a class gear box problem

Hi Ray
This is an unusual problem the gearbox change is controlled electronically so normally the first thing to do is get the vehicle plugged into a diagnostic machine ( this would also normally require a proper mercedes start diagnostic and not a cheap one at the local garage) But assuming it is electronic you have 2 choices the gearbox control module located in the car just below the gear change lever and the main electronic control located in the oil pan of the gearbox not so easy to access, Just a thought have you ever spilt a beverage such as coffee or soda over the gear lever area ?
as I have seen this problem before with a lack of gear selection it had shorted the module, So I guess for the cheapest first stop I would locate a second hand module from the breakers yard and try this first it should be a easy DIY anything more will require some proper mechanical skills hope this is of some help, Just a last minute thought have you checked underneath for a transmission oil leak as the oil may just be low this model suffers with the "O" ring around the electronic plug failing and causing a leak its located on the right hand side of the box just above the oil pan at the front edge.
Richard (mercedes technician)

yous should probably change the filter before you overhaul it because it is cheaper

to change you need

new filter and 2 gallons of trans fluid= $54

if you do it your self and that might solve the problem


rate me if i helped you

Most auto boxes stop working because they either need topping up ir need a gear box filter change doubtfull its anything major as mercs are normally bo omb proof

when engine cold sometime will not go into gear when i stop at a junction its a 240e merc auto

It seems oil level is low in your gearbox, and it most likely leaking from adapter bushing ( where cable is connected to gearbox).
You need to replace seals or complete bushing and correct oil level.
Better if you visit your mechanic.

How many miles in 2 years? if over 100k - way beyond a tune up. gear box's need to be done approx 60-70k.

A class merc,sunroof slightly opens then stops, semi auto clutch wont gear down into 3rd gear, can any one tell me what the problem could be???

Steve

I got the same problem about a month ago.
I've changed the gearbox fluid and filter and it's OK now.

you need to change band clean valve body so box has to come out of the car

Last one I had that did this turned out to be the vehicle speed sensor that it mounted in the electric valve panel in the valve body.